Earlier quoted context omitted.
Why the downvotes? The CEO did admit to committing such anti-user actions.
Because it wasn't censorship or oppression.
It's one thing to prevent opinions one finds unsavory from being visible. Whatever one's own opinion on such activities, we can all agree that it's within the realm of what's reasonably permissible for a company that runs a site where others can comment.
It's a quite different, and much more dangerous, thing to instead secretly modify comments expressing those opinions so that they say things other than the person who posted them actually wrote. In a purely legal sense, at least as far as I know, that's every bit as permissible as deleting such comments. In an ethical sense, they are nothing alike, and I don't think there is anything political in the statement that a company where someone has admitted engaging in such behavior, and not been immediately terminated as a direct result of it, merits extraordinary skepticism with regard to all its future doings.